CVE-2026-44825highobserved exploitationCWE-1188 CWE-798

CVE-2026-44825: high-severity vulnerability in Apache Solr

Apache Solr: Enabling BasicAuth using bin/solr CLI configures additional insecure users

Published 01 Jun 2026 · Updated 02 Jun 2026

78Vexday Risk Score

Patch now. It exploitation observed by VulnCheck and has a working public exploit.

ssvc Actcvss 8.1epss 2.8%

from disclosure to weapon32 days

Published on NVDJun 1

1st PoC+32d

VulnCheck+51d

exploitation probability

2.8%top 14% of all CVEs

observed exploitation

yesVulnCheck

3 public exploit(s)

Hardcoded credentials in the Basic Authentication setup tool (bin/solr auth enable) in Apache Solr versions 9.4.0 through 9.10.1 and 10.0.0 allows a remote attacker to gain full administrative access to the cluster via publicly known default credentials installed silently alongside the user-specified account. As an immediate workaround without upgrading, delete the template users (superadmin, admin, search, index) from security.json or change their passwords. The future, not yet released, versions 9.11.0 and 10.1.0 will not be vulnerable, and it will be enough to upgrade to solve the issue. Not affected: * Clusters where bin/solr auth enable was not used to bootstrap BasicAuth * Clusters where template users have been assigned strong passwords after bootstrap

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Apache Software Foundation · Apache Solr

public PoCs found — 3

githubgithub.com/gagaltotal/CVE-2026-44825-Apache-Solr-Scanner★ 12 githubgithub.com/shinthink/solrradar★ 5 vulncheckvulncheck.com/xdb/510c61328b83unverified

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.